Many countries are using tunnel to provide spaces for human activities not include()
A. storage
B. living
C. war
D. transportation
查看答案
A construction method for tunnel is called NANM, its full name is ()
NATM construction process contains()、()、()、()
下列全身覆有明显蜡粉的是:
A. 菜缢管蚜
B. 桃蚜
C. 甘蓝蚜
D. 烟蚜
下列害虫为害可传染病毒病的害虫可能是:
A. 菜蚜
B. 菜粉蝶
C. 菜蛾
D. 甘蓝夜蛾